SA520411743B1 - Rotary steerable system having actuator with linkage - Google Patents

Abstract

An apparatus disposed on a drillstring for deviating a borehole advanced by a drill bit includes a housing, a director, and an actuator. The housing on the drillstring transfers rotation to the drill bit. The housing has a bore communicating fluid to the drill bit. The director is disposed on the housing to rotate therewith. The director includes a piston movable in a chamber, a pad pivotable about a pivot point between extended and retracted conditions relative to the housing, and a linkage arm pivotably connected between the piston and the pad. The actuator in fluid communication with the bore is operable at least between a first condition directing communicated fluid from the bore or other source to the chamber of the director and a second condition at least permitting the director to retract toward the retracted condition. Fig. 4A

Description

Rotary Steerable System Having Actuator with Linkage Full Description BACKGROUND The subject matter of the present invention relates to a device and method for controlling a downhole Ges assembly The greatest benefit of the subject matter of the invention is likely to be control a steering mechanism to be installed below the blister hole to steer the drill bit in a chosen direction; Most of the following description will relate to routing applications. Notwithstanding, it would be understood that the subject matter of the invention being disclosed could be used to control other parts of a downhole blister structure. When drilling for oil ally it is advisable to maintain maximum control of the all operation even when the drilling operation is several kilometers below the surface. The 0 directional drill bits can be used for directional drilling and are typically used when drilling complex Oh-hole drill paths that require precise control of the drill bit path during the drilling process. Directional drilling is complicated because the directional drill bit has to work in harsh blister bore conditions. for example; The steering mechanism should operate reliably under exceptional stress and vibration cla conditions as they will normally be encountered during the drilling operation. constitutes additional; 5 The steering mechanism is usually located close to the bit and the desired real-time directional control of the steering mechanism is controlled remotely from the surface. No matter how deep inside the borehole ll the guide mechanism should maintain the desired path and direction and should also maintain workable drilling speeds. Many types of steering mechanisms are used in industry. A known type of 0 steering mechanism has a motor ae located in a housing housing with a longitudinal axis where it deviates or is offset from the axis of the blister bore. The actuator can be of different types including electric and hydraulic types. Hydraulic motors that operate using circulating drilling fuid are known as “mud” motors and laterally offset motor housing is referred to as ale 25 with a sl bent housing. housing A lateral displacement can be used

To change the trajectory of the bore hole. By rotating the drill bit with the motor and rotating the motor housing with the drill string simultaneously; The orientation of the housing that deflects is constantly changing; The path of the Bia advance well bore is maintained substantially parallel to the tubing axis. And by rotating the drill bit only using the motor without rotating the shaft of the drill pipes, the path of the al Bis hole is inclined from the axis of the cull shaft of the unturned drill in the direction of the deviation on

Curved housing. Another steering mechanism is a Bly steerable rotary steerable tool that allows the drill bit to be moved in any direction chosen. And this way; The direction (and degree) of curvature of the bore hole ll can be determined during the drilling process and can be selected sly on the measured drilling conditions at a depth of

0 is specified for the wellbore diameter.

A well-known method of deflecting the AL gear for steering is by using a piston to power the pad. The filling works to push in the opposite direction of the formation in order to generate a lateral force for the bit to tilt the hole of the “ill hole ©:100””. And problems occur due to the relative movement at the interface between the filling and the piston »and the relative movement leads to wear and tear damage to both surfaces in addition to

5 “cocking” loads on the piston.

Although the various steering mechanisms are effective; However, operators continue to search for faster directional drilling mechanisms and technologies; more stronger; Reliable and low cost. alg directs the subject matter of the present invention to this endeavour. General description of the invention

0 according to the present invention; A device is placed on the cull pole of the ALY borehole drill and is advanced by a drill bit. The device consists of “at least one Cue director” and at least one actuator. The housing is positioned on the drill pipe shaft Jang rotating to the drill bit. For example; The housing may have rotation transmitted to it by the drill-line shaft by a motor placed on the drill-line shaft or by the IS of the drill-line shaft and motor.

At least one guide is placed on the housing to rotate with it so that at least one guide rotates around the bore ll drilled when the housing is rotated. and that at least one router contains at least one ule of padding; a linkage arm and the piston is movable in a chamber specified in the housing; A cmodule or AT component associated with the device. And the padding ALE is to rotate pivot around a pivot point between an outstretched position and a straight position.

shrunken for the night. For example; A pivot pin may connect the flange of the shim to the housing; Module; or an AT component associated with the device. Finally, the link arm is pivotally connected between the piston and the filling so that the link arm can transmit the movement of the piston in the chamber to rotate the filling axially around the pivot point. For example; The piston may have a first linkage pin attached to the first end of the link arm The shim may have a second linkage pin attached to the second end of the link arm. Geometrically speaking, the first and second link pins and the pivot point may be parallel to the center of rotation of the housing; Whereas the link rods may lie in a plane perpendicular to the center of rotation.

while on the move; The piston can move between the first and second positions in the chamber in a diagonal direction with respect to the center of rotation of the housing. Then the movable link rods with the piston can rotate with respect to the pivot point from a first angular direction at the first position to a second gh direction at the second position. The second angular direction may be more aligned with the diagonal direction than the first angle direction. Accordingly, one can Move the first axial screw diagonally in the diagonal direction with the piston;

5 while the second pivot screw can be rotated around the pivot point.

and at least one Jide is placed on the housing in fluid contact with the fluid being delivered; which could form the hole; From a chydraulic system or other source. As the device progresses through the bore hole ll at least one dite is operable between a first position (guiding fluid delivered to at least one guide chamber) and a second position

0 (to allow at least one contraction directed towards the contracted position). It may include, for example; At least one Jade on the valve member and the “drive” and the valve member may be movable (eg “rotable”) with respect to an inlet port and an outlet port. An actuable turning device for your movement (e.g. “Loe valve member” from (dic) chai) enables the valve member to rotate in a first direction directing the fluid being delivered; or in a second direction close to

5 _ fluid connection. (The inlet port may be placed in fluid contact with the fluid delivered from the housing bore or from a hydraulic source). and when necessary; The fluid delivered to at least one of the guides can leak; Which at least may allow at least one directed contraction towards the contracted position. For example, the chamber can specify a vent hole to connect with a hole (al).

The device may include a console that operates at least one actuator. for example 0; The controller can be configured to specify the Gohl direction for at least one router with respect to

of a desired path for the blister hole punch and can be configured to move the specified direction of Jade operations at least one Aly bore hole toward the desired path. deg for example; The control unit may contain various sensors and electronics to determine the angular orientation of at least one housing guide with respect to a given reference (eg dag set p1001066); The controller can store and/or communicate the desired track information. The console and/or at least one player may rotate with cca) although other arrangements may be used. At least one router may include a module that can be moved movably on the side of the housing. And this way; The module can hold the plunger; Link Rods and Pivot Point» The module can also specify the chamber with a channel to make adjacent connection to at least one actuator 0. A module can facilitate formulation configuration and may allow different piston arrangements; filling; Tie rods and the like for use with housings of various sizes, configurations, etc. The piston may have a seal placed around the piston which slidingly engages the interior of the chamber. For example; The plug may be a metal sealing ring that forms a did 5 seal with the chamber wall. And for the composition; The piston may include a central socket attached to an external piston body. The central bushing is attached to the link arm and the outer piston body has a seal placed around it. calli a drilling method according to the present invention to advance bore a Ju hole with a drill bit on a rotating drilling assembly coupled to a drill pipe shaft by transferring the rotation of the rotary drilling assembly to the drill bit; fluid control in the rotary drilling installation by operating at least one actuator located on the rotary drilling installation; A piston drives you in a radial direction on the rotary drilling fixture using a fluid controlled by at least one actuator actuated; transmission of the movement of the piston using the linkage arm to a tampon placed on the rotary drilling fixture; Rotation of the filling axially around a pivot point on the rotary drilling assembly by means of the movement transmitted from the 5 link shaft; and advanced ll-hole bore tilting with rotary drilling combination using a shim that has been rotated axially. Operating at least one operator and controlling the fluid may involve measuring the gly of the rotary drilling installation as it rotates; measure the orientation of the rotary drilling fixture as it rotates relative to the bore hole; taking a desired path for drilling a wellbore; and transfer the desired trajectory to operate at least one actuator 0 based on the angular rate and orientation of the rotary drilling fixture.

to control a fluid using at least one actuator that has been actuated; Part of the flow can be directed through the rotary drilling assembly to the piston by operating a valve. For example (Jha) valve actuation may involve moving (eg; rotating) a valve member relative to the inlet port and outlet port with an operable actuator to move (eg; rotate) the valve member. The valve member may be directed in the direction of the first controlled fluid; While the valve member may approach in a second direction the controlled fluid. The valve may communicate with the fluid controlled from the rotary drilling fixture hole or from a hydraulic source. If necessary, the fluid delivered to at least one guide can be leaked to allow at least one of the guides to contract towards the retracted position. and to transmit the movement of the piston using the linkage arm to the wad placed on the rotary 0 drilling assembly; The movement of the piston can be transmitted using a first link pin attached to the piston at the first end of the link arm to a second link bolt connected to the shim at the second end of the link arm. The piston may move between the first and second positions in a diagonal direction with respect to the center of rotation of the housing; The link rods can rotate relative to the pivot point from a first angular direction at the first location to a second angular direction at the second location. The second angular direction may be more aligned with the diagonal direction than the first angular direction. Subsequently; While the movement of the piston is transmitted using the linkage arm to the shim placed on the rotary drilling fixture; The first link pin can travel diagonally with the piston; The second link screw may rotate around the pivot point. The transmission of rotation of the rotary drilling combination to the drill bit may involve transmission of rotation to the housing by a shaft (iad) by a motor placed on the drill-line shaft or by an OS of 0 drill-line shaft and motor. daly Controlling at least some of the flow through a rotary drilling combination by operating at least one actuator placed on the rotary drilling combination may involve selecting an angular orientation of at least one router relative to a desired trajectory for the All hole bore and transmitting the specified direction of operation At least one operator ALY drilled the 'ill hole' toward the desired path. The foregoing general description of the invention is not intended to summarize every possible embodiment or every 5 aspect of the present invention. Brief explanation. Figures 1a-1b schematically show a drilling system incorporating apparatus 8160108 of the present invention. Figures 2-12b show the router in perspective and end views.

Figures 3a-3b show the router in a cross-section view and an end-section view. Figures 4-14b show two perpendicular cross-sections of a steering gear directional tool in a retracted position. Figure 5 shows a cross-section of a directional tool of a router in an extended position. Figures 6-16 schematically show terminal views of the router in operation. Figure 1 shows a schematic of a drilling system 10 comprising a he 100 router of the present invention. And as described; A downhole 20 borehole drilling installation drills a 12 borehole through an earth formation. Assembly 20 is operationally connected to a drill string 22 using a suitable 0 21 connector. At a 0” turn the drill string 22 is operationally connected to a rotary drilling rig 24 or other known type of surface rig. A downhole assembly 20 includes a control assembly 30 containing a probe section 32; power supply section 34; Electronics section 36 and a telemetry section used downhole (downhole telemetry section yu) 38. The probe section 32 contains 5 sensors (wld seal Jie dala) accelerometers, cmagnetometers and inclinometers cinclinometers, which can be used to indicate direction; Movement and other measurements of the downhole combination of the blister 20 within the blister bore hole 12. This information may be used; Turn to determine the wellbore hole path for guidance purposes. Probe section 32 may also contain any other type of probe used in MWD Measurement-While-Drilling and Logging-While-Drilling LWD operations including without limitation; Sensors responding to gamma radiation, neutron radiation, and electromagnetic fields. The electronics section 36 contains electronic circuits to operate and control the elements (GAY) 5 inside a structure below the hole 20 ull. For example (Jia) The electronics section 46 contains the 07 processor(s) down the blister hole (not shown) and a memory memory down the All hole (not shown). The memory can store directional drilling measurements; measurements made by Probe Section 32) and systems Directional Drilling Operation The downhole processor(s) can process measurement data and telemetry data for various purposes disclosed here.

Elements within a downhole assembly 20 communicate with surface equipment 8 using a telemetry section used downhole 28. These telemetry section components 38 receive and transmit data to a telemetry unit used uphole idl ( not shown) inside surface equipment 38. (Kay) the use of various types of borehole telemetry all remotely including mud pulse systems mud siren systems electromagnetic systems. Angular velocity encoding

and acoustic systems. The power supply section 34 is provided with the electrical power needed to operate the other elements within Structure 0. Bale is powered by batteries; But the batteries can be completed on

0 through power extracted from the drilling fluid by power turbines; For example.

during operation; drill bit rotates 40; As shown technically by the arrow 8 rb. And the rotation of the drill bit 40 was transmitted through the rotation of the drill pipe shaft Rp 22 at the rotary rig aug 24. Bale controlled the rotational speed of the drill pipe shaft RPM round per minute from Surface using surface equipment 28. Lead can transfer rotation

5 is added to the drill bit 40 by means of a drill driver (not shown) located on the drill fixture 20.

during operation; The drilling fluid system 26 pumps the drilling fluid or 'mud' from the surface downward and through the drill-tube shaft 22 to a combination below hole Sa 0. The mud exits through the drill bit 40 and returns to the surface via the space The annulus of the borehole annulus, and the flow cycle has been clarified idiomatically by means of arrows 14.

and for drilling an advanced directional well borehole 12 using a down-hole BLAST 20 combination; The control combination 30 is actuated to change the delivery of a shear from fluid GAS (Gastured Drilling Mud) to the rotary router 100 containing multiple directional tools or the routers 150a-c. Notwithstanding what has been disclosed herein that the fluid flow through the device 100 is used to direct the assembly 20 other arrangements may be used. For example; A separate hydraulic system can be used

5 Assembly 20 is sealed to the drilling fluids and the control assembly 30 can direct that hydraulic fluid to move the guides 150a-c.

The rig 100 rotates with a drill string 22 and/or with a drill motor (not shown) that

By rotating the drill bit 40. For example; The device can rotate 100 at the same rate as a tube shaft

Drill 22. And of course; (Sa) Use of the device with a down-hole blister drilling motor (not shown)

0 is a subject above device 100. In this case; The device can rotate 100 at the motor's output speed

at no rotation of the drill-line shaft or at a mixing speed of the drill-line shaft 22 if the motor is engaged or not present; or by combined mixing of the drill-pipe shaft 22 and the motor when both are rotating.

and on it; It can be said that the 100 device generally always rotates at the speed of the drill bit. by operating multiple routers 15a-c; The router 100 guides the advanced extrusion hole punch 12 uses the effective deflection when the machine rotates 100. During operation; For example (Jud) the control assembly 30 controls the fluid flow through the downstream assembly of the blister 20 and delivers portions of the fluid to the directional tools 2-150 of the steering gear 100. It causes rotation of the device 100 The control assembly 30 can vary the fluid delivery per router from multiple routers 15-115c whether standalone; annular; successive; Community or similar to adjust router orientation 100

0 when advancing into the wellbore hole 12. and rotated by the directional tools 150a-+c thereafter use the applied pressure from the delivered flow to expand/contract cyclically with respect to the rotation of the rb drill bit to determine the trajectory of the advancing wellbore 12.

Lad Sag coordinate expansion/retraction of directional tools 150a-c with drill combination direction 20 in advance jill borehole 12 to control drilling path; digging straight ahead;

Sally 5 controls the proportional curvature. And to do so; The control assembly 30 can be controlled using direction information measured by the probe section 32 in conjunction with the control information stored in a memory down-hole Al) of the electronics section 36 to direct the trajectory of the forward ll-hole bore 12. Finally; The extension/retraction of the directional tools 15a-c asymmetrically engages the drill bit 40 with a specific side in the advance blister borehole 12 for directional drilling.

aig 20 Steering device 100 schematically shown in more detail in Fig. co] A spot control unit 110 includes an actuator 112 and a valve 114 and is connected to sensors and the control combination power source 30. A directional tool 150—only one of which is shown here—has a chamber Piston 2. Piston 154) Link rods 156” and a gasket 158 placed on the device 100 to rotate with it. The directional tool 150 is operable to rotate its gasket 158 to pivot around a pivot point 159

5 between an extended position and a retracted position for the device 100.

In one of the arrangements; A positional controller 110 may communicate with all directional tools 150 on device 100. In an alternate arrangement; Each 150 directional instrument may have its own 110 positional controller. In this cabal arrangement each spot controller 110 can operate one of its directional devices 150 independently of the other. And while the router works

0 100 in Figs. 1a-1b on the amg drill during continuous rotation; which could be as high as 300

rpm and with peaks well above about 600 apm at which point each spot controller 0 can be run to extend its pad 158 at the same target location”; It forms a synchronous rotation with the drill pipe shaft. in the meantime; The rotating position of each positional controller 110 is determined by the sensors of the control system 30.

and in order to extend padding 158; Jas) 112 operates the valve 114 and controls the fluidic connection of the flow 15 as flow from the piston 17 to the piston chamber 152. For example; The valve 114 in an initial position continuously directs the flow 15 as piston flow 7 into the piston chamber 152 to drive the piston 154 and to rotate the packing 158 axially about its pivot point 159 towards the extended position. In contrast; The valve 114 does not connect in a second position

gall 0 15 as the flow of the piston 17 into the piston chamber 152 where the piston 4 and packing 158 can retract towards the retracted position. The flow 15 can be an equipment flow connected through bore 16 to the device 100 or it can be a dedicated hydraulic fluid flow connected from the hydraulic system 16 to the device 100.

The shrinkage of the packing 158 may occur simply by pushing the wall of the hole ull opp

5 packing 158 due to lack of wave piston flow 17. Orifices (not shown) in the piston chamber 152 may allow fluid to seep into the blister bore hole allowing contraction of the piston 154. In addition or Va than that; Spring returns (not shown in Fig. 1b) or similar may be used for piston 154; fillings 158; or geared tools 150 to compress the pistons 154 when not powered using the piston flow 17. Indeed; may be

0 These spring returns are necessary in some applications.

and in general; The valve 114 may be an inline or rotary type valve to optionally deliver the flow 15 as the piston flow 17. The linear type valve may control the flow of continuous fluid and may be configured to rapidly move the valve element in three directions and two positions to supply and leak drilling fluid to and from the piston of operator 76. As shown in the figure

al 25 The valve 114 may be a revolving type valve with adjacent movable discs du to each other. This hall disc valve 114 may be two-way (on-off); But it can be stopped at any point during a cycle to provide an appropriate amount of flow.

It is understood that the router 100 may use a number of different methods of supplying power and releasing the pistons; Many different valve and actuator arrangements can be used. Considering the above description of drilling system 10 and router 100; Discussion moves on

Now to the 100 router embodiments for implementing directional drilling. Figure 2 shows a perspective view of the eal from a router 100 of the drilling rig 20 of the present invention. As previously mentioned, the router 100 of the drill combination 20 is positioned on the drill string 22 for an Al borehole Ad advanced by the drill bit 40. Additional details of the router 100 are provided in the end view in Figure 2b. The rig 100 contains a housing or drill collar 102 with an interstitial hole 108 for the drilling fluid. The drill collar 102 is coupled at top end 104 (with a pin thread) to the components that are used up-hole ll of fixture 20 eg control assembly 30, clamping tool, other drill-pipe 22 or similar. Drill collar 102 at bottom end 106 0 (with female thread (box thread) with components used downhole for fitting 20; e.g. 'another drill collar' fixture for drill bit 40; or similar. Various routers or The routers 150 are on housing 102 near terminal 106) The routers 150 are associated with one of the instrument control units 110 of the instrument or with its instrument controller 110 also located in housing 102. The routers 150 can be located on several sides of the housing 102 (either symmetrically or not symmetrical); 2b mentioned here for example “JU The 100 router includes three 150a-+c routers positioned at about every 120 0 degrees. Overall; More or less tools can be used 150. mag Figs. 3-13b Device 100 in further detail in cross section view and end section view. Each of the routing devices 150 contains 158 pads that rotate around a pivot point 159. For each of the routing devices 150; The piston 154 engages with one of the lever ends or connecting rods 156 connected with the gasket 158. The piston 154 is shiftable 5 correspondingly in the housing chamber 152 between the extended and retracted positions; The interaction of the connecting rods 156 between the piston 154 and the gasket 158 causes the gasket 158 to pivot around the pivot point 159 and either extend away from housing 102 or retract toward the housing 102. Gaskets 158 can have a surface treatment; For example, surface hardening with ctungsten carbide hard facing or other features to resist corrosion. And as described; There may be no biasing element to shrink pads 158. Instead; may shrink

The shims 158 normally rotate under the housing 102 in the blister hole. In addition; Orifices (not shown) in piston chambers 152 can leak drilling fluid from chamber 152 into the wellbore bore to allow piston 154 to deflate. The housing 102 contains external pockets to hold the local control units 110 for each of the 158 sockets. As previously mentioned; The local control unit 110 includes the actuator 112 to operate the valve 114 to control the delivery of equipment flow to the piston chamber 152. As shown; The housing 102 contains an axial hole 108 along the longitudinal axis of the housing that connects the drill pipe shaft 22 with the drill bit 40. The filtered ports dad jal 109 can connect the internal flow in the axial bore il 108 to one of the 0 Valve profiles 114 for local control unit 110 for each geared instrument 150. Depending on Ala valve 114; The gia of the equipment flow from bore 108 can be reached by conduit into the piston chamber 152 of the piston 154. Once coal though what is disclosed here was the use of a saul through bore 108 of the device 100 to guide the geared tools 150( ald other arrangements may be used. Aad eg a separate hydraulic system (16: Fig. 1[b) 5 may be used which is sealed to the drilling fluids and valves 114 can deliver the hydraulic fluid by means of a channel to the piston chamber 152 of the piston 154. Going into more detail on the guides 150, the discussion is on Figures 4-4b and 5. Figures 4-14b show two vertical cross-sections of the guider 150 housed in the retracted position of the guider, while Figure 5 shows a cross-section of the guider 0 150 in As shown, the guiding tool 150 may include a module 151 that can be movably fixed in a side cavity of the implement housing 102. Module 1 may locate the piston chamber 152 with the channel 155 for connection adjacent to the valve 114 in the special housing 2 Module 151 contains the piston 154 (packing 158) 5 link rods 156) and the pivot point 159. Module 151 provides versatility for the guided tool 150. For example a specific housing 102 in the device 100 can be configured to drill more than One size Mie blister borehole borehole sizes are 2.54- 0.953 cm 10.16- 1.27 can and 5.08- 1.905 cm (8/3-8; 2/1-8; and 4/3-8 in.). However; Different 151 modules with 0 shims 158 and the like of different lengths and dimensions can be used with the same housing 102 to adapt to hole sizes

Digging different wells to be drilled. This introduces some variety and modularity to the composition. The piston 154 includes a piston body 160 with a stopper 162 positioned around it. The seal 162 slips into an inner wall of chamber 152 and can be formed from a seal produced from a metal-to-metal seal, while other types of seals can be used. accordingly; Seal 162 can use any suitable sealing element. The hole(s) (not shown) in chamber 152 were allowed for fluid to leak from chamber 152 into the annular space of the Îll bore hole allowing the piston 154 to retract in chamber 152 and chamber 152 to be cleared of debris. The infusion may use one or more ports (not shown) in chamber 152 which are always open to the annular space to puncture the blister hole. Diversion can also be achieved in a number of other ways. for example; (Ko) a separate valve (not shown) can be used to leak fluid from the chamber 152) or the same valve used for the inlet 108 can be used for leaking. In addition to the plug 162, the piston 154 may have a central bushing 164 fitted to the outer piston body 160. The bushing is connected Centering 164 with link arm 156 and facilitates assembly and alignment of components.The piston 154 has link pin Jf 1157 connected to first link gh end 6 and gasket 158 has second link pin 157b connected to second end of link arm 6. The two link screws are 1157 Pivot pin 159 of the insert is parallel to the C-center of rotation of the housing 102) and the link rods 156 are located perpendicular to the C-center of the swivel. In order to facilitate rotation, bushings (not shown) can be used with the two link pins 157a-b0 and main pivot pin 159. LS Best illustrated in Figs 4 and 5; the piston 154 is movable radially between the first and second positions in a radial direction t relative to the c-center of rotation of the housing 102. The connecting rods 156 are movable with the piston 154 and rotated toward the pivot point 159 from a first angular direction (Fig. 4a) at the first position of the piston to a second angular direction (Fig. 5 5) at the second position of the piston. The second bearing (Fig. 5) is more aligned with the t direction than the first bearing (Fig. 4a). Accordingly; As shown in Figures HM and 5; The axle of the link rods 156 rotates from a wide 5: groove in Fig. 4a to a narrow 8: groove in Fig. 5 when the pad 158 is expanded by means of the piston 154. In other words; The first pivot screw 1157 is moved radially in the radial direction t with the piston 154) while the second pivot screw 0 157b is rotated about the pivot point 159.

The arrangement with tie rods 156 provides two revolute joints between the piston 4 and the gasket 158. This reduces wear at the interface between the gasket 158 and the piston 154. The tie rods 156 also allow the piston 154 to travel in a radial and straight direction in its direct bore (instead of curved) of the chamber 152 which is placed in the radial direction t from the housing side 102. In this way; Tie rods provide 156 loading flexibility so that the impact of lateral loads is reduced; tilting and the like slightly on the movement on the piston 154. Furthermore; The call pitch is reduced and the piston movement is more efficient. The piston 154 can also be considerably thinner and can fit better in the fixed radial housing provided around housing 102. Dials The piston 154 can move further; Which improves 0 that of router performance. Actual piston displacement 154 and actual total rotations 159 will depend on the desired deflection of the equipment; overall diameter of the equipment; and other factors. Having understood the router 100; The discussion now turns to the operation of Device 100. Figures 6-16 shows a schematic terminal view of Router 100 in two working states. As mentioned lia Router 100 has several routers or routers 150a-c placed around housing 102 (eg 5 The three routers 150a-c shown here.. As expressed here, routing tools 150a-c rotate with housing 102; That the transverse displacement of the guide tools 150a-c act on the daly) longitudinal axis of the housing 102 relative to the advance ull hole bore. This in turn leads to a change of 0. Independent retraction of the guide tools 150a-c pws to the required direction D to tilt the rig 100 during the drilling process.In this way, the rig 100 pushes the bit 40 to change the drilling path.Figs 6a-6b shows one of the routing tools 1150 extending from the rig during a first rotary direction (Fig. 6a) and then during a final rotating thrust (Fig. 6b) after housing 102 has been rotated. 5a since the guiding rig 100 rotates with the drill-tube shaft 22 and/or with a mud motor (not shown) mounted on top of the rig 100 The operation of the router 100 is cyclic to closely match the rotational duration of the drill pipe shaft 22 and/or the mud motor. and when the router rotates 100) the direction of the guiding tools 271150 is determined by Gob control assembly 30; positioning probes; toolface dag 17 and so on. deg 0 desire to tilt the drill bit 40 in direction towards the direction indicated by arrow d; it is necessary to extend

One or more oriented tools 150a-c La that they face in the opposite direction p. The control assembly 30 calculates the direction of the exact opposite position p and instructs the actuators to operate the directed tools 150a-c accordingly. more specifically; The control combination 30 may cause the actuation so that one guiding lal extends 150 in a first angular direction (dus” in Fig. 17) of the desired direction d and then retracts in a second angular direction (8 in Fig. 7b) in the direction of rotation t of the guiding device 100. Since the guider 1150 rotates in the t direction with the housing 102, the orientation of the guider 1150 Aus is determined for a reference point using the face of the equipment v and of the housing 102. This results in it corresponding to the guider 150 turned to extension starting in a first angular direction Ba is relative to the face of the implement T and to the contraction at a second angular direction m 0 Lu to the face of the equipment T F. It is understood that the face of the equipment T 0 and housing 102 can be determined by the control combination 30 using the probes and techniques previously discussed. Guider 1150 does not immediately move to its extended position; it may be necessary for the active gala to operate before the guider 1150 reaches the corresponding location p and the effective deflection remains active for a certain percentage per cycle t. Thus, the guider 5 can extend 1150 During the u-section of the course R best suited to the guide tool 1150 to stretch or retract relative to the housing 102 and engage the all-hole of the housing letter 102. The RPM of the course of the housing can be used in drilling direction d relative to the face of the implement E operating parameters of the guide tool 150) and other factors were included to determine the passage U. and if necessary; It is possible to place them so that the angles » By are evenly spaced on both sides of the site p; 0 because it is likely that the guiding device 1150 expands gradually (namely, slower than it contracts); It is preferable that corner 8 be closer to site p than corner ». Naturally (Jal) the router 100 as die disclosed herein contains additional routers 150[b-c] positioned at different angular directions around the perimeter of the housing. The expansion and retraction of these additional routers 150b-c can be proportionally controlled jointly With what has been discussed in reference to Figures 6a-6b so that multiple expansion and contraction operations of different routers 150a-c can be organized during each (or one or more) cycles R. Thus, the time of the housing dal 102 and the routers 150a-c can be determined c with the t-course of the drill string 22 and the rig 50 based on the orientation of the routing rig 100 in the advance bore hole (Jl). The offset time can be set at the end to orient the drill bit 40 in a desired drilling direction d and can be performed with each turn or 0 any subset of the turns.

(Sag) Achieve Bilas forward drilling with proportional control. (Sang) Forward drilling (Hdl) can involve changing the target direction d through each cycle or it can involve stopping the system (gl) clamping each of the tools Guided 271150) and proportional control can be achieved by thrusting once; two or three times per cycle or by varying the arc that runs across each of the 150a-c guided tools. Bley on this; the detected system can contain aie on all 150a-c routing tools retracted (or all stretched) at the same time. The retraction of all 150a-c routing tools may be used to perforate the advance blister hole along a straight path at least some of the time. It can provide extension for all 150a-c guided tools C Benefits of expansion or stabilization

during drilling.

10 The foregoing description of Preferred and Other Embodiments is not intended to limit or limit the scope or applicability of the innovative concepts conceived by the Applicants. It will be appreciated with the benefits of the present disclosure that the attributes described above may be used according to any embodiment or aspect of the subject matter disclosed”; either on its own or dig with any other dow described; In any other embodiment or aspect of the subject matter disclosed.

Ay 15 In exchange for disclosure of innovative concepts herein, applicants wish to obtain all patent rights provided by the disclosed subject matter. lly The subject matter disclosed is intended to include all modifications and changes to the extent that they are within the scope of or equivalent to the disclosed embodiments. List of reference numbers in the drawings:

0 Figure 1

24 rotary drilling equipment, 26 mud systems

28 surface equipment, 32 auxiliary probes

5 34 Power Supply Sections 36 Electronics Sections 38 Telemetry Downhole Sal Figure 1b 16 Tool Hole

0 16 hydraulic system

Claims (14)

protection elements 1. A device placed on a drill string for tilting a borehole Li bore hole preceded by a drill bit where the device includes a housing placed on the drill cull shaft; The housing has a center of rotation around which the housing rotates, and the rotation is transmitted to the drill bit, and the housing contains a bore hole that works to deliver the fluid from the drill pipe column to the drill bit; At least one guider placed on the housing to rotate in it At least one guider includes a SLs piston for movement in a chamber Pad rotatable axially around a fixed pivot point between an extended position condition and a retracted condition with respect to the housing; a linkage arm connected in a rotatable form 0 axially between the piston and the packing; and at least one actuator Jide placed on the housing so that it is fluidly connected to the calla fluid) and at least one actuator is capable of being operated between at least a first position directed at the fluid being connected to at least one actuator saa and a second position allowing At least for at least one router by shrinking to the shrunken position. 5 2. Device according to claim 1 where at least one router has a removable module selecting in the chousing side of the housing the module specifies the chamber and the module specifies the channel channel to connect the chamber with at least one actuator; The module serves to catch the piston “brown; The cpad is the linkage arm and the fixed pivot point 0 3. The device according to claim 1; Where the piston includes a seal placed around the piston and engages the inner wall of the chamber in a sliding way. 4 the device of claim 3; Where the seal includes a metal sealing element that works to interlock a metal that forms a slip on the inner wall of the chamber .chamber 5. The device in accordance with claim 3; where the piston includes a central socket attached to the body of the piston”; The aig connects the central bushing to the clinkage arm and the piston body has a seal placed around it. 6. The device in accordance with claim 1; Where the piston comprises a first linkage pin attached to the first end of the tlinkage arm where the pad includes an ob linkage pin attached to the Ob end of the link arm. 7. The device according to Clause 6 where the piston is movable between first and second positions in a diagonal direction with respect to the housing rotation center and where the linkage arm is movable with the piston rotating with respect to the fixed pivot point point from a first angular orientation at position one to a second angle at position cll with the second angle more aligned with the diagonal direction than the first direction. 8. The device is in accordance with Clause 6 Gus The first linkage pin is moved diagonally in a diagonal direction with the press 15000m; And where the second link nail is rotated around the fixed pivot point 9. The device according to Clause 6 where the first and second linkage pins and the fixed pivot point are parallel to the center of rotation of the housing and where the linkage arm is located in a plane perpendicular to the center of rotation. 0. The device according to claim 1; Where Lad is conveyed housing rotation by pipe shaft (asl) p0:7118070; By means of a motor mounted on the drill string or by means of 0 both the drill string and the motor. 1. The device according to claim 1 which also includes a controller operating at least one actuator. 2. the device in accordance with Clause 11; Where the controller is configured to specify the angular orientation of at least one director relative to a desired path for the 5 aig borehole configured to convey the specified angular orientation for at least one actuator operations ALY drills the all hole into the desired path. 3. The device according to Clause 1 wherein the chamber defines a vent to connect to the borehole and a hole leaks the fluid that is delivered from at least one director and allows at least the contraction of one borehole on At least towards the deflated condition of 16030160. 14. Device according to claim 1 where at least one Jindal actuator includes: a valve member that is rotatable for the dial, a Meg inlet port, an outlet 'port, and a drive rotatable to rotate the valve member; The rotating valve member (Jl ola) directs the fluid being delivered; The valve member rotated in a second direction works to 0 stop the fluid being delivered. 5. The device according to Clause 14 where the input port is placed in fluid contact with the fluid that is delivered from the bore wii housing or from the hydraulic Jo ell “Source” 6. Hafrah method; Comprises: 5 Advances in drilling a borehole using a drill bit on a rotating drilling assembly coupled to a drillstring by reducing the rotation around the center of the rotary drilling fixture to the drill bit; fluid control in the rotary drilling installation by operating at least one actuator Jide placed on the rotary drilling installation; 0 The piston moves you away from the center of rotation of the rotary drilling fixture using the fluid controlled by at least one actuator that has been actuated; The piston is the subject of the rotary drilling assembly and has ALE to rotate around the center of rotation; transmission of piston movement with ghd linkage arm to pad pad and link arm placed on the rotary drilling assembly and rotatable in it about the center of rotation; 5 Rotation of the filling axially around a fixed pivot point located on the rotary drilling assembly by means of the movement transmitted from the link arm; and AL) borehole jl) progressed with a rotary drilling combination using an axially rotated shim. 7. Method according to Claim 16 (Gus) The operation of one actuator at least 0 and the operation of fluid control include: Measuring the angular rate of rotation of the rotating drilling assembly when it is rotating; Measuring direction of rotation of the rotary drilling fixture when it is rotated relative to the blister bore hole 0080:016; take the desired path to drill the blister hole; The desired trajectory is reduced to at least one burner operation based on the angular rate and orientation of the rotary drilling fixture. 8. Method according to Clause 16 wherein the fluid control process using at least one actuator actuated includes directing the controlled fluid through the rotating drilling assembly to the piston by actuating the valve ‏ 9. The method according to Claim 18, where the process of directing the controlled fluid through the rotary drilling assembly 0 to the piston by operating the valve includes connecting the valve with the fluid that is delivered from the bore of the rotary drilling assembly or from 'hydraulic source (gua 0. Method according to Claim 18) where valve actuation comprises: rotating the valve member to for Mie an inlet port and an output port 5 mm using an operable drive To rotate the valve member; the valve member operated in one direction directs the controlled fluid; the valve member rotated in a second direction serves to stop the delivery of the controlled fluid. 1. The method according to Claim 16) where the transmission of the piston movement using rotating placed on the rotary drilling assembly pad to the linkage arm linkage pin ghd includes the transmission of the piston movement using a linking pin ‎ drilling assembly 0 with the piston at the first end of the link arm to a link pin 5 connected to the packing at the second end of the link arm 2. The method according to Claim 21, where the process of transferring the movement of the piston using rotating placed on the rotary drilling assembly pad to the linkage arm linkage ghd includes moving the piston between two first and second positions in a diagonal direction with respect to drilling assembly 5 Rotary drilling assembly spindle center; rotating the ghd linkage relative to the fixed pivot point from a first angular direction at the first position to a second angular direction at the second position; The second angle direction is more aligned with the diagonal direction than the first angle direction. 3. The method according to claim 21 comprising the transmission of the piston movement using the 0 linkage arm to the pad placed on the rotating fixture Drilling assembly on moving the first linkage pin in a diagonal direction using the piston and rotating the second linkage pin around the pivot point. 4. The method according to Claim 16 (Cus) The process of transmitting the rotation of the rotating drilling assembly to the drill bit includes the transmission of the rotation of the rotary drilling assembly 5 by means of a cdrillstring by means of a motor placed on Drill pipe shaft or by both drill pipe shaft and motor. 5. The method according to Claim 16 wherein the fluid control process during the rotating drilling assembly by operating at least one Jaded actuator placed on the rotary drilling assembly includes determining the angular direction of the pad with respect to a desired 0 path To bore the borehole and move the angular direction specified for at least one actuator's operations to tilt the borehole towards the desired trajectory. 6. the method in accordance with claim 16; It involves leaking water delivered from the piston and at least allowing the pad to contract to a retracted condition. — 2 2 — A YZ YA Yi 5 CRG JHA A 0 RR Ra BN AA G4 FRE SH SY 2 | RR A PE, RA Rp Love RN 2 RR 7 | . . = SN p Ah n=] % A VY = : 2 8 PN VT Sp A So re I 23 Ma A 1 NO) yr BOS oO TKR Pa: 0 A 8 1 > m nka 1 8 xX } od | ) [2 2 | FIGURE 1 A BAD 7 H 7 TE Ra c= He 00 SEES RRR — 2 3 — yah T-La Waq 1 4 | | 104 yay —f ] ro hp l m x 11% Noy b1 Fig. (*?) 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